- 36 mm x 24 TPI left-hand threading
- Sized for Italian bottom bracket shells
- *Requires to be used with BTS-1 Bottom Bracket Tapping Set (purchase separately)
The 693 is a 36 mm x 24 TPI right-hand threaded tap designed for use with the BTS-1 Bottom Bracket Tapping Set to tap Italian threaded bottom bracket shells. This tap is used on both sides of the bike, as both sides of the Italian standard are right-hand threaded.
NOTE: Always use cutting fluid such as Park Tool CF-2 when machining.